Excavator Alternators

1117900 24V 70A 21SI Alternator for J180 Hinge Mount Applications

Q: What numbers are documented for 1117900?

Primary Manufacturer Part Number: 1117900. Official Supersession: 19010182. Official Reman Reference: 10461235. Upgrade Reference: 8600388. Rejected Legacy Import String: 9210923092409250. Rejected Legacy Import String: 26-21SI. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 1117900 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

1117900 24V 70A 21SI Alternator for J180 Hinge Mount Applications, OEM/reference 1117900, 24V 70A 21SI Alternator, product view 1

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OEM / reference1117900

Specification24V 70A 21SI Alternator

Catalog ID70285304

1117900 is an official Delco Remy 21SI alternator reference. The manufacturer specifies 24V, 70A, negative polarity, J180 hinge mounting, an M6 B+ terminal and M4 R/I terminals. The unit is obsolete and Delco Remy lists 19010182 as its supersession. Confirm the complete label, mount, pulley, fan, regulator terminals and rotation before ordering.

Product Type: Alternator
Voltage: 24 V
Amperage: 70 A
Alternator Family: 21SI
Mount: J180 hinge
B+ Terminal: M6
R/I Terminals: M4
Polarity: Negative

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Manufacturer Part Number	Delco Remy alternator reference	1117900
Official Supersession	Delco Remy superseding reference	19010182
Official Reman Reference	Verify configuration	10461235
Upgrade Reference	Not a direct interchange without mount review	8600388
Rejected Legacy Import String	Not a part number	9210923092409250
Rejected Legacy Import String	Not a part number	26-21SI

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

1117900

Remanufactured number

10461235

Other documented relationship

19010182
8600388
9210923092409250
26-21SI

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

24V 70A 21SI Alternator

Category: Excavator Alternators
Catalog ID: 70285304
Photo views: 2

Before ordering

Confirm these details

Confirm voltage and rated amperage against the original alternator label.
Compare mounting ears, pulley type and pulley-groove count.
Check plug shape, terminal position and regulator connection.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

2 model references

Application: Confirm by Delco number and J180 physical configuration
Fitment limitation: Confirm label, mount, pulley, fan, terminals and rotation

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 1117900

Which machines use 1117900?

Recorded compatible model references include Application: Confirm by Delco number and J180 physical configuration, Fitment limitation: Confirm label, mount, pulley, fan, terminals and rotation. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 1117900?

Remanufactured references: 10461235.

How do I confirm 1117900 before ordering?

Confirm voltage and rated amperage against the original alternator label. Compare mounting ears, pulley type and pulley-groove count. Check plug shape, terminal position and regulator connection. Send clear photos of the original unit and connector layout when requesting a quote.

Continue comparing verified references from the same system.

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